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        <a href="yadis-module.html">Package&nbsp;yadis</a> ::
        Module&nbsp;xri
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<!-- ==================== MODULE DESCRIPTION ==================== -->
<h1 class="epydoc">Module xri</h1><span class="codelink"><a href="yadis.xri-pysrc.html">source&nbsp;code</a></span><br /><br />
Utility functions for handling XRIs.<br /><br />

<hr />
      <p><strong>See Also:</strong>
        XRI Syntax v2.0 at the <a 
        href="http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=xri"
        target="_top">OASIS XRI Technical Committee</a>
      </p>
<!-- ==================== FUNCTIONS ==================== -->
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#identifierScheme" class="summary-sig-name">identifierScheme</a>(<span class="summary-sig-arg">identifier</span>)</span><br />
      Determine if this identifier is an XRI or URI.
  </td>
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#toIRINormal" class="summary-sig-name">toIRINormal</a>(<span class="summary-sig-arg">xri</span>)</span><br />
      Transform an XRI to IRI-normal form.
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#_escape_xref" class="summary-sig-name">_escape_xref</a>(<span class="summary-sig-arg">xref_match</span>)</span><br />
      Escape things that need to be escaped if they're in a 
      cross-reference.
  </td>
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#escapeForIRI" class="summary-sig-name">escapeForIRI</a>(<span class="summary-sig-arg">xri</span>)</span><br />
      Escape things that need to be escaped when transforming to an 
      IRI.
  </td>
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#toURINormal" class="summary-sig-name">toURINormal</a>(<span class="summary-sig-arg">xri</span>)</span><br />
      Transform an XRI to URI normal form.
  </td>
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    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#_percentEscapeUnicode" class="summary-sig-name">_percentEscapeUnicode</a>(<span class="summary-sig-arg">char_match</span>)</span>
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    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#iriToURI" class="summary-sig-name">iriToURI</a>(<span class="summary-sig-arg">iri</span>)</span><br />
      Transform an IRI to a URI by escaping unicode.
  </td>
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">bool</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#providerIsAuthoritative" class="summary-sig-name">providerIsAuthoritative</a>(<span class="summary-sig-arg">providerID</span>,
        <span class="summary-sig-arg">canonicalID</span>)</span><br />
      Is this provider ID authoritative for this XRI?
  </td>
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">unicode</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#rootAuthority" class="summary-sig-name">rootAuthority</a>(<span class="summary-sig-arg">xri</span>)</span><br />
      Return the root authority for an XRI.
  </td>
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  <td width="15%" align="right" valign="top" class="summary">
    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <span class="summary-sig"><a href="yadis.xri-module.html#XRI" class="summary-sig-name">XRI</a>(<span class="summary-sig-arg">xri</span>)</span><br />
      An XRI object allowing comparison of XRI.
  </td>
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<br />
<!-- ==================== VARIABLES ==================== -->
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    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <a href="yadis.xri-module.html#XRI_AUTHORITIES">XRI_AUTHORITIES</a> = <code title="['!', '=', '@', '+', '$', '(']">['!', '=', '@', '+', '$', '(']</code>
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    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <a href="yadis.xri-module.html#UCSCHAR">UCSCHAR</a> = <code title="[(160, 55295), (63744, 64975), (65008, 65519), (65536, 131069), (131072, 196605), (196608, 262141), (262144, 327677), (327680, 393213), (393216, 458749), (458752, 524285), (524288, 589821), (589824, 655357), (655360, 720893), (720896, 786429), (786432, 851965), (851968, 917501), (921600, 983037)]">[(160, 55295), (63744, 64975), (65008, 65519), (6553...</code>
  </td>
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    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <a href="yadis.xri-module.html#IPRIVATE">IPRIVATE</a> = <code title="[(57344, 63743), (983040, 1048573), (1048576, 1114109)]">[(57344, 63743), (983040, 1048573), (1048576, 1114109)]</code>
  </td>
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    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <a href="yadis.xri-module.html#_escapeme_re">_escapeme_re</a> = <code title="&lt;_sre.SRE_Pattern object at 0x8383430&gt;">&lt;_sre.SRE_Pattern object at 0x8383430&gt;</code>
  </td>
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    <span class="summary-type">&nbsp;</span>
  </td><td class="summary">
    <a href="yadis.xri-module.html#_xref_re">_xref_re</a> = <code title="&lt;_sre.SRE_Pattern object at 0xb7cfff50&gt;">&lt;_sre.SRE_Pattern object at 0xb7cfff50&gt;</code>
  </td>
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<!-- ==================== FUNCTION DETAILS ==================== -->
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<a name="identifierScheme"></a>
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  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">identifierScheme</span>(<span class="sig-arg">identifier</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#identifierScheme">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br />Determine if this identifier is an XRI or URI.
  <dl><dt></dt><dd>
    <dl><dt>Returns:</dt>
        <dd><code>&quot;XRI&quot;</code> or 
          <code>&quot;URI&quot;</code></dd></dl>
  </dd></dl>
</td></tr></table>
</div>
<a name="toIRINormal"></a>
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       cellspacing="0" width="100%" bgcolor="white">
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">toIRINormal</span>(<span class="sig-arg">xri</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#toIRINormal">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br />Transform an XRI to IRI-normal form.
  <dl><dt></dt><dd>
  </dd></dl>
</td></tr></table>
</div>
<a name="_escape_xref"></a>
<div class="private">
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  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">_escape_xref</span>(<span class="sig-arg">xref_match</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#_escape_xref">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br />Escape things that need to be escaped if they're in a 
  cross-reference.
  <dl><dt></dt><dd>
  </dd></dl>
</td></tr></table>
</div>
<a name="escapeForIRI"></a>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">escapeForIRI</span>(<span class="sig-arg">xri</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#escapeForIRI">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br />Escape things that need to be escaped when transforming to an IRI.
  <dl><dt></dt><dd>
  </dd></dl>
</td></tr></table>
</div>
<a name="toURINormal"></a>
<div>
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       cellspacing="0" width="100%" bgcolor="white">
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  <table width="100%" cellpadding="0" cellspacing="0" border="0">
  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">toURINormal</span>(<span class="sig-arg">xri</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#toURINormal">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br />Transform an XRI to URI normal form.
  <dl><dt></dt><dd>
  </dd></dl>
</td></tr></table>
</div>
<a name="_percentEscapeUnicode"></a>
<div class="private">
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  <table width="100%" cellpadding="0" cellspacing="0" border="0">
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">_percentEscapeUnicode</span>(<span class="sig-arg">char_match</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#_percentEscapeUnicode">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  
  <dl><dt></dt><dd>
  </dd></dl>
</td></tr></table>
</div>
<a name="iriToURI"></a>
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       cellspacing="0" width="100%" bgcolor="white">
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  <table width="100%" cellpadding="0" cellspacing="0" border="0">
  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">iriToURI</span>(<span class="sig-arg">iri</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#iriToURI">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br />Transform an IRI to a URI by escaping unicode.
  <dl><dt></dt><dd>
  </dd></dl>
</td></tr></table>
</div>
<a name="providerIsAuthoritative"></a>
<div>
<table class="details" border="1" cellpadding="3"
       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <table width="100%" cellpadding="0" cellspacing="0" border="0">
  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">providerIsAuthoritative</span>(<span class="sig-arg">providerID</span>,
        <span class="sig-arg">canonicalID</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#providerIsAuthoritative">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br />Is this provider ID authoritative for this XRI?
  <dl><dt></dt><dd>
    <dl><dt>Returns: bool</dt></dl>
  </dd></dl>
</td></tr></table>
</div>
<a name="rootAuthority"></a>
<div>
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       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <table width="100%" cellpadding="0" cellspacing="0" border="0">
  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">rootAuthority</span>(<span class="sig-arg">xri</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#rootAuthority">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br /><p>Return the root authority for an XRI.</p>
  Example:
<pre class="literalblock">
   rootAuthority(&quot;xri://@example&quot;) == &quot;xri://@&quot;
</pre>
  <dl><dt></dt><dd>
    <dl><dt>Returns: unicode</dt></dl>
  </dd></dl>
</td></tr></table>
</div>
<a name="XRI"></a>
<div>
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       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <table width="100%" cellpadding="0" cellspacing="0" border="0">
  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">XRI</span>(<span class="sig-arg">xri</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="yadis.xri-pysrc.html#XRI">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <br /><p>An XRI object allowing comparison of XRI.</p>
  Ideally, this would do full normalization and provide comparsion 
  operators as per XRI Syntax.  Right now, it just does a bit of 
  canonicalization by ensuring the xri scheme is present.
  <dl><dt></dt><dd>
    <dl><dt>Parameters:</dt></dl>
    <ul class="nomargin">
        <li><strong class="pname"><code>xri</code></strong> (unicode) - an xri string</li>
    </ul>
  </dd></dl>
</td></tr></table>
</div>
<br />
<!-- ==================== VARIABLES DETAILS ==================== -->
<a name="section-VariablesDetails"></a>
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         ><span class="options">[<a href="#section-VariablesDetails"
         class="privatelink" onclick="toggle_private();"
         >hide private</a>]</span></td>
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<a name="XRI_AUTHORITIES"></a>
<div>
<table class="details" border="1" cellpadding="3"
       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <h3 class="epydoc">XRI_AUTHORITIES</h3>
  
  <dl><dt></dt><dd>
    <dl><dt>Value:</dt>
      <dd><table><tr><td><pre class="variable">
['!', '=', '@', '+', '$', '(']                                         
      </pre></td></tr></table></dd>
    </dl>
  </dd></dl>
</td></tr></table>
</div>
<a name="UCSCHAR"></a>
<div>
<table class="details" border="1" cellpadding="3"
       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <h3 class="epydoc">UCSCHAR</h3>
  
  <dl><dt></dt><dd>
    <dl><dt>Value:</dt>
      <dd><table><tr><td><pre class="variable">
[(160, 55295),
 (63744, 64975),
 (65008, 65519),
 (65536, 131069),
 (131072, 196605),
 (196608, 262141),
 (262144, 327677),
 (327680, 393213),
<span class="variable-ellipsis">...</span>                                                                    
      </pre></td></tr></table></dd>
    </dl>
  </dd></dl>
</td></tr></table>
</div>
<a name="IPRIVATE"></a>
<div>
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       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <h3 class="epydoc">IPRIVATE</h3>
  
  <dl><dt></dt><dd>
    <dl><dt>Value:</dt>
      <dd><table><tr><td><pre class="variable">
[(57344, 63743), (983040, 1048573), (1048576, 1114109)]                
      </pre></td></tr></table></dd>
    </dl>
  </dd></dl>
</td></tr></table>
</div>
<a name="_escapeme_re"></a>
<div class="private">
<table class="details" border="1" cellpadding="3"
       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <h3 class="epydoc">_escapeme_re</h3>
  
  <dl><dt></dt><dd>
    <dl><dt>Value:</dt>
      <dd><table><tr><td><pre class="variable">
<span class="re"><span class="re-group">[</span><span class="re-char">\u00a0</span><span class="re-group">-</span><span class="re-char">\ud7ff</span><span class="re-char">\uf900</span><span class="re-group">-</span><span class="re-char">\ufdcf</span><span class="re-char">\ufdf0</span><span class="re-group">-</span><span class="re-char">\uffef</span><span class="re-char">\u10000</span><span class="re-group">-</span><span class="re-char">\u1fffd</span><span class="re-char">\u20000</span><span class="re-group">-</span><span class="re-char">\u2fffd<span class="variable-linewrap"><img src="crarr.png" alt="" /></span>
</span><span class="re-char">\u30000</span><span class="re-group">-</span><span class="re-char">\u3fffd</span><span class="re-char">\u40000</span><span class="re-group">-</span><span class="re-char">\u4fffd</span><span class="re-char">\u50000</span><span class="re-group">-</span><span class="re-char">\u5fffd</span><span class="re-char">\u60000</span><span class="re-group">-</span><span class="re-char">\u6fffd</span><span class="re-char">\u70000</span><span class="re-group">-</span><span class="re-char">\u<span class="variable-linewrap"><img src="crarr.png" alt="" /></span>
7fffd</span><span class="re-char">\u80000</span><span class="re-group">-</span><span class="re-char">\u8fffd</span><span class="re-char">\u90000</span><span class="re-group">-</span><span class="re-char">\u9fffd</span><span class="re-char">\ua0000</span><span class="re-group">-</span><span class="re-char">\uafffd</span><span class="re-char">\ub0000</span><span class="re-group">-</span><span class="re-char">\ubfffd</span><span class="re-char">\uc00<span class="variable-linewrap"><img src="crarr.png" alt="" /></span>
00</span><span class="re-group">-</span><span class="re-char">\ucfffd</span><span class="re-char">\ud0000</span><span class="re-group">-</span><span class="re-char">\udfffd</span><span class="re-char">\ue1000</span><span class="re-group">-</span><span class="re-char">\uefffd</span><span class="re-char">\ue000</span><span class="re-group">-</span><span class="re-char">\uf8ff</span><span class="re-char">\uf0000</span><span class="re-group">-</span><span class="re-char">\uffffd</span><span class="re-char">\u<span class="variable-linewrap"><img src="crarr.png" alt="" /></span>
100000</span><span class="re-group">-</span><span class="re-char">\u10fffd</span><span class="re-group">]</span></span>                                                       
      </pre></td></tr></table></dd>
    </dl>
  </dd></dl>
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  <h3 class="epydoc">_xref_re</h3>
  
  <dl><dt></dt><dd>
    <dl><dt>Value:</dt>
      <dd><table><tr><td><pre class="variable">
<span class="re"><span class="re-char">\(</span><span class="re-group">(</span><span class="re-char">.</span><span class="re-op">*?</span><span class="re-group">)</span><span class="re-char">\)</span></span>                                                              
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